WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1981001200) LIGHT GRID WITH SINGLE LIGHT SOURCE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001200    International Application No.:    PCT/EP1980/000108
Publication Date: 30.04.1981 International Filing Date: 10.10.1980
IPC:
F16P 3/14 (2006.01), G01V 8/20 (2006.01)
Applicants:
Inventors:
Priority Data:
2941739 16.10.1979 DE
Title (EN) LIGHT GRID WITH SINGLE LIGHT SOURCE
(FR) GRILLE DE LUMIERE AVEC SOURCE DE LUMIERE UNIQUE
Abstract: front page image
(EN)The light grid generates a signal in case of an undesirable intervention in the working space of a machine. The light grid is coupled to a light source (1) the light beam of which is distributed over several optical channels (6), by means of a light distribution unit. A light reception device also composes this assembly. The light distribution unit is provided with as many directional couplers (3) as there are channels, the secondary light conduits of which are adjacent to the light conduits (4) of the corresponding optical channels (6) and which are connected by another light conduit (2) with the light source (1) and with one another in series. The electrodes of a directional coupler (3) are connected with an evaluation and control device (9). The directional couplers form electronically controlled light switchings by means of which the light pulses of the light source (1) are successively and cyclically directed into the optical channels (6).
(FR)La grille lumineuse produit un signal lors d"intervention indesirable dans l"espace de travail d"une machine. La grille lumineuse est couplee a une source lumineuse (1) dont le faisceau lumineux est distribue sur plusieurs canaux optiques (6), au moyen d"une unite de distribution de lumiere. Un dispositif de reception de lumiere fait partie de cet ensemble. L"unite de distribution de lumiere est munie de coupleurs directionnels (3) dont le nombre est egal au canaux, dont les conduits de lumiere secondaires sont adjacents a des conduites lumineuses (4) des canaux optiques (6) correspondants et qui sont connectes par un autre conduit de lumiere (2) vers la source de lumiere (1) et entre eux en serie. Les electrodes d"un coupleur directionnel (3) sont connectees a un dispositif d"evaluation et de commande (9). Les coupleurs directionnels forment des aiguillages lumineux commandes electroniquement a l"aide desquels les impulsions lumineuses de la source lumineuse (1) sont diriges successivement et cycliquement dans les canaux (6) optiques.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)